一、实验目的：

1.PC配置相同24位网段地址，采用如图vlan划分隔离
2.PE1、PE2之间采用trunk qinq的外层vlan标签vlan 100 300 400
3.基本qinq:CE1/CE3上行trunk vlan10、vlan20，PE1/PE2对应接口默认均封装一层vlan100
4.灵活qinq:CE2/CE4上行trunk vlan30、vlan40，PE1/PE2对应接口根据vlan来封装，vlan30封装一层vlan300，vlan40封装一层vlan400

二、实验拓扑：

实验拓扑

三、实验配置：

1、基本qinq配置：

a.PE1/PE2互联口放通vlan 100 300 400

<PE1>
#
interface GigabitEthernet0/0/3port link-type trunkport trunk allow-pass vlan 100 300 400
<PE2>
#
interface GigabitEthernet0/0/3port link-type trunkport trunk allow-pass vlan 100 300 400

b.CE1/CE3基本配置

<CE1>
#
interface Ethernet0/0/1port link-type accessport default vlan 10
#
interface Ethernet0/0/2port link-type accessport default vlan 20
#
interface Ethernet0/0/3port link-type trunkport trunk allow-pass vlan 10 20<CE3>
#
interface Ethernet0/0/1port link-type accessport default vlan 10
#
interface Ethernet0/0/2port link-type accessport default vlan 20
#
interface Ethernet0/0/3port link-type trunkport trunk allow-pass vlan 10 20

c.PE1/PE2对应接口配置基本qinq封装vlan100

<PE1>
#
interface GigabitEthernet0/0/2port link-type dot1q-tunnelport default vlan 100
<PE2>
#
interface GigabitEthernet0/0/2port link-type dot1q-tunnelport default vlan 100

c.测试验证

PC1ping通PC5

PE1互联口抓包，可见双层vlan标签，外层vlan100，内层vlan10

2、灵活qinq配置：

a.CE2/CE4基本配置

<CE2>
#
interface Ethernet0/0/1port link-type accessport default vlan 30
#
interface Ethernet0/0/2port link-type accessport default vlan 40
#
interface Ethernet0/0/3port link-type trunkport trunk allow-pass vlan 30 40
<CE4>
#
interface Ethernet0/0/1port link-type accessport default vlan 30
#
interface Ethernet0/0/2port link-type accessport default vlan 40
#
interface Ethernet0/0/3port link-type trunkport trunk allow-pass vlan 30 40

b.PE1/PE2对应接口配置灵活qinq vlan30封装vlan300 vlan40封装vlan400

<PE1>
#
#
interface GigabitEthernet0/0/1qinq vlan-translation enableport hybrid untagged vlan 300 400port vlan-stacking vlan 30 stack-vlan 300port vlan-stacking vlan 40 stack-vlan 400
<PE2>
#
#
interface GigabitEthernet0/0/1qinq vlan-translation enableport hybrid untagged vlan 300 400port vlan-stacking vlan 30 stack-vlan 300port vlan-stacking vlan 40 stack-vlan 400